Add abbreviations in the getting_started page (#863) #3230

Job	Run time
licenses	1m 4s
code-quality	5m 10s
docs	9m 4s
build (ubuntu-latest, 3.8)	49m 21s
build (ubuntu-latest, 3.9)	55m 44s
optional_dependencies (default)	1m 0s
build (ubuntu-latest, 3.10)	58m 4s
optional_dependencies (tensorflow)	1m 39s
build (ubuntu-latest, 3.11)	59m 26s
optional_dependencies (torch)	2m 20s
build (windows-latest, 3.10)	54m 53s
optional_dependencies (prophet)	1m 8s
build (macos-latest, 3.10)	1h 3m 48s
optional_dependencies (keops)	2m 20s
optional_dependencies (all)	3m 50s
	6h 8m 51s

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